body, html {
	margin: 0;
	padding: 0;
	height: 100%;
	overflow: hidden;
}

#gui {
	background-color: rgba(255, 255, 255, 0.7);
	position: fixed;
	top: 0;
	left: 0;
	z-index: 1;
	padding: 1em;
}

#score {
	margin: 1em;
}